Attaches to AK rifles with military AK receiver interface; Puts optic on center or extremely close to center of the top cover on mil-spec built AK rifles; Modular top piece allows the top to be changed to a different configuration later if desired; Constructed from hard coat anodized 6061 aluminum; Features the patented Elite Defense QD system for no tool adjustment and repeat zero locking; Weight 5.8 oz.; 100% made in USA